HONDA SH300I

299cc Petrol Class 2

#3219 of 5426 overall #537 of 921 HONDAs #2047 of 2787 other bikes

81.8%

first-time pass rate

10.7%

failed outright

14,764

median miles at test

598

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2022

The SH300I's first-time pass rate has fallen 16.7 points since 2011, 88.9% to 72.2%.

Pass rate by mileage

how the SH300I's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage SH300I passes first time 88.8% of the time; by 40k that's 83.9%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a SH300I

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	42	38.5	1.3×
lighting and signalling	17	15.6	0.6×
tyres and wheels	11	10.1	0.8×
steering and suspension	10	9.2	0.5×
tyres	8	7.3	1.7×
lamps and reflectors	8	7.3	0.5×
suspension	7	6.4	1.6×
fuel and exhaust	3	2.8	0.7×
reg plates and vin	2	1.8	0.6×
steering	1	0.9	0.4×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the SH300I beats 1 of its 4 closest rivals (SUZUKI AN400, YAMAHA RD350, YAMAHA YP250).

SUZUKI AN400 86.2% pass · 27.1k tests YAMAHA RD350 86.3% pass · 19.6k tests YAMAHA YP250 82.5% pass · 12.4k tests YAMAHA WR250F 78.0% pass · 10.5k tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the SH300I.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2011 (92.3% pass). Weakest: 2009 (72.9%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

HONDA SH300I FAQ

answers computed from the data above · terms in the glossary

Is the HONDA SH300I reliable?

The HONDA SH300I is less reliable than average for its class: 81.8% of its 598 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3219 of 5426 models.

What does a SH300I fail its MOT on most?

brakes — 39% of all defects recorded against failed SH300I tests.

What is the best year of SH300I to buy used?

By first-time pass rate, 2011-registered examples do best (92.3%) and 2009 worst (72.9%). Condition and history still trump the year.

How many miles will a SH300I last?

The median SH300I shows 14,764 miles at test, and examples around 40k miles still pass 83.9% of the time — mileage alone rarely kills one.